教師資料查詢 | 類別: 期刊論文 | 教師: 張經霖 CHANG, HENRY CHING-LIN (瀏覽個人網頁)

標題:Correlation between electronic states of O, Cu, and Ba in several high-Tc superconductors
學年76
學期2
出版(發表)日期1988/04/15
作品名稱Correlation between electronic states of O, Cu, and Ba in several high-Tc superconductors
作品名稱(其他語言)
著者Horn, S.; Cai, J.; Shaheen, S. A.; Croft, M.; 張經霖; Chang, C. L.; Boer, M. L. den
單位淡江大學物理學系
出版者College Park: American Institute of Physics (AIP)
著錄名稱、卷期、頁數Journal of Applied Physics 63(8), pp.4193-4195
摘要X-ray photoemission measurements of Y-, Sm-, Eu-, and Yb-based high-temperature superconductors show a clear correlation between Cu 2p satellite features, which previous work has shown are associated with materials which exhibit superconductivity, and a high-binding-energy peak in the O 1s spectrum. In samples with varying oxygen content the intensity of the Cu 2p satellites changes, reflecting the Cu valence which varies between 1 + and 2 + . The high-binding-energy O peak appears to track the Cu valence. This high-binding-energy peak may be indicative of the presence of O 2p holes, suggested in some models as necessary for superconductivity. The Ba 3d peak position also changes systematically with the Cu valence.
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語言英文
ISSN0021-8979
期刊性質國外
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產學合作
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國別美國
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